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Question #1: Ozone depletion is caused by__

Dichloromethane Carbon tetrachloride Dichlorofluoromethane Chloroform

Question #2: The solvent used for dry cleaning of clothes is ___

Freon Alcohol Acetone Carbon tetrachloride

Question #3: The geometry of carbonium ion is ____

Tetrahedral Liner Planar Pyramidal

Question #4: Freon is used as __

Insecticide Antiseptic Refrigerant Anaesthetic

Question #5: Which one of the following compounds is optically active?